Here we go with double margin bug in IE6. For those who are unfamiliar with the Double Margin Bug, if you float an element and then proceed to add margins in the same direction as the float, Internet Explorer 6 will double the value. Example, A left margin of “10px” will becomes “20px” in IE6. Well to remove the addition margin form IE6 just use the display:inline;.

.selector {
display: inline;
float: left;
margin-left: 100px;
}